Traction-engine gearing.



E. M. WHEELOGK. TRACTION ENGINE GEARING. APPLICATION FILED Ammo, 1910.

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COLUMBIA PLANouRAmi; co., WASHINGTON, n. c.

Patented J an. 9, 1912.

. pr s'rar TRACTION-ENGINE GEARING.

Specification of Latters Patent.

Patented Jan. 9,1912.

Application filed April 30, 1910. Serial No. 558,570.

To all whom it may concern:

Be it known that I, EDWIN M. WHEELOGK, a citizen of the United States,residing at Minneapolis, in the county of Hennepin and State ofMinnesota, have invented certain new and useful Improvements inTraction-Engine Gearing, of which the following is a specification.

My invention relates to gearing for traction engines, and its mainobject is improvement of the speed-changing and reversing devices.

My improvements are illustrated in the accompanying drawings, in whichFigure 1 is a plan view of a tractionengine embodying my improvements.Fig. 2 is an enlarged plan View of the speedregulating and reversingdevices shown in the middle portion of Fig. 1. Fig. 3 is a view similarto Fig. 2 but showing the speed-regulating devices in differentpositions. Fig. 4 is a horizontal sectional view of the gearing devicesof Figs. 2 and 3, but showing them in different positions of adjustmentfrom either of those views. Fig. 5 shows a vertical sectional elevationon the line z2 of Fig. 4. Fig. 6 is an enlarged view of the left handportion of Fig. 4. And Figs. 7 and 8 are detail views of the hanger forsupporting the reversing pinion.

In the drawings the reference numeral 1 designates the framework of atraction engine; 2 the traction wheels; 3 the steering wheels on adivided axle 4, which are operated in the usual way; 5 an explosiveengine; 6 the fan; 7 the heat-radiator; 8 the explosive-engine shaft; 9the fly-wheel thereon; 10 the chain-drive connecting the shaft 8 with asprocket-wheel 11 or a pinion 12 on a driving-shaft 13, which shaft, bymeans of the devices hereinafter described, serves to drive acounter-shaft'14 that carries the pinions 15 for engaging the gearwheels16 on the axle of the traction wheels to propel the machine. On theopposite end of the shaft 13 is a pulley 17 for receiving a belt totransmit power to a threshing or other machine when the traction engineis stationary.

The parts so far designated may be of any usual or suitableconstruction, for my improvements relate to the means for transmittingmotion, at variable speeds, from the driving-shaft 13 to thecountershaft 14, for

reversing the motion of the latter, and for.

driving the shaft 13- independently of the shaft 14. The gearing for thepurpose is i mounted on the shafts 13 and 14 and on an intermediateidler shaft 18.

On the shaft 13 is a long loose sleeve 19 that is ournaled in a box 2Oon the frame 1 and carries on its outer portion the pulley 17. Ashoulder 21 on the sleeve at the inner side and a collar 22 at the outerside of the box 20 prevent lengthwise movement of the sleeve. Onportions of the sleeve are cogs 23 and 24, and between such toothedportions is a smooth cylindrical portion 25 of smaller diameter than thetoothed portions. The inner end of the sleeve 19 is provided with afixed clutch member 26 and on the shaft 13 is keyed the sliding clutchmember 27 for engaging the fixed member 26 to rotate the sleeve. Theslidable member 27 is connected by a link or rod 28 to one of the armsof a bell-crank 29 that is fulcrumed at 30 to a diagonal bar 31 attachedat one end to the enginecab 32 and at the other to a standard 33 risingfrom a frame crosspiece 34; and the bell-crank 29 is rocked by a rod 35connected to its other arm and extending rearward into the cab toposition to be conveniently operated by means of a lever 36 by thedriver of the machine. By reciprocating the rod 35 to and fro the drivercan shift the loose clutch member and so control the rotation of thesleeve as he may desire. The shaft 18 is also mounted on the top of theframe 1 in boxes 37, and also carries a long loose sleeve 38 on whichare cast or secured the transmission and change-speed gears 39, 40, and41. The gear-whee1 39 is adapted to engage the toothed portions of thesleeve 19 and to be disengaged therefrom while registering with therecessed portion 25, and the sleeve 38 is slidable and adjustable alongthe shaft 18.

Below and in mesh with the pinion 41 is an idler pinion 42 that isjournaled in the opposite sides of an inclined hanger attached to thesleeve, the function of the pinion 42 being to reverse the direction ofmovement of the machine. The hanger sides straddle the pinion 41, theside beattached by bolts 48. The lower end of the hanger is looselyfitted between transverse guide-ways 49 attached to suitably lnclinedbars 50 supported from the frame-work sides, so that the hanger can bemoved freely in transverse direction. The hanger, and with it the sleeve38, may be moved to and fro along the idler shaft 18 by the operationofa bell-crank 51 that is fulcrumed at 52 to the bar 31. One lever armis connected by a link 53 to an upwardarm 54 on the hanger, and theother lever arm is connected to a rod 55 that extends rearward into thecab where a suitable operating lever 56 is provided for reciprocatingit.

On the shaft 14 is a loose sleeve 57 which carries the differentialgearing and the journal-boxes 58, which are provided withroller-bearings 59, for this shaft are beneath the side-pieces of theframe 1 and suspended therefrom by hangers 60 and 61, so that the shaftis below the plane of the shafts 13 and 18. One of the pinions 15 isheld on the shaft by a key 62 while the other is held loosely in placeby a pin 63 extendmg through the projecting end of the shaft. Collars 64and 65 at the inner sides of the boxes, the former held in place on thesleeve and the latter on the shaft by set-screws 66, prevent lengthwisemovement of the shaft or the sleeve 57.

The inner end of the sleeve 57 carries a bevel-gear 67, and an oppositecorresponding bevel-gear 68 has its hub 69 secured to the shaft bya key70, so that the former gear serves to turn the sleeve on the shaft andthe latter to turn the shaft. Between these bevel-gears and inengagement therewith are three or more bevel pinions 71 on shortradially-arranged shafts 72, the outer ends of which are journaled inboxes 73 secured on the inner face of the rim 74 of a spur gear 75, andthe inner ends are journaled in boxes 76 supported on the web or spokes77 of the gear 75. These parts constitute a differential gearing of awell known type and enable the traction wheels to revolve at differentspeeds in moving the machine in curved courses forward or backward.

For the purpose of changing the speed at which the pinions 15 aredriven, the rim 74 of the wheel 75 has a lateral extension 78 providedwith flanges 79 by means of which it is secured by bolts 80, and thewheel 75 is connected, to the web or spokes 81 of a larger spur gear 82,which rotates freely around the hub of the bevel-gear 68.

The parts of the gearing described are so arranged that when thegear-Wheel 39 is in position to register with the space 25 between thesets of cogs 23 and 24 on the sleeve 19, as shown in Fig. 4, the machinewill remain stationary and the pulley 17 may be utilized fortransmitting power to some other machine. If from that position the gear39 be moved to engagement with the inner set of cogs 23, as shown inFig. 1, it will also engage the gear 75 and thereby rotate the pinion orcounter-shaft 14. If the gear 39 be moved to engage the outer set ofcogs 24, as shown in Fig. 2, the movement of the sleeve will bring thegear 40 into engagement with the gear 82, and thereby change the speedof the shaft 14. And if the gear 39 be moved still farther outward, asshown in Fig. 3, the idler pinion 42 will be brought to engagement withthe gear 82 and reverse the direction of rot-ation of the shaft 14.

In use, the operator is able to control the rotation of the sleeve 19 asdesired by reciprocating the rod 35, and to utilize the power forpropelling the engine or driving a second machine by suitablereciprocation of the rod 55 to move the gear 39 to or away fromengagement with the cogs of that sleeve. The speed of movement of themachine he can change by meshing the gears 39 and 75 or the gears 40 and82, and the direction of movement by meshing the pinion 42 with the gear82. Under all of these conditions of movement, whether forward orbackward, the differential gear devices attached to the gears 75 and 82will perform their function of enabling the traction wheels to revolveat different speeds while the machine is moving in curved courses.

Having described my invention, what I claim and desire to secure byLetters Patent 1s- 1. In a traction engine, a driving shaft, a powertransmission sleeve on said shaft having thereon two pinions, acountershaft, driving gears thereon, a clutch for connecting the sleeveto rotate with the driving shaft, an idler shaft, an idler sleevethereon provided with gears adapted to be placed in or out of mesh withsaid driving gears, one of said idler gears being adapted to mesh withthe pinions on the transmission sleeve, and means to position said idlersleeve so that said last named gear will mesh with either one or theother of said pinions on the transmission .sleeve thereby effectingdriving connection for rotating the countershaft at different speeds.

2. In a traction engine, a driving shaft, a power transmission sleeve onsaid shaft having thereon two pinions, spaced apart so as to leave anintermediate portionof the sleeve free from gearing, and a drivingpulley, a countershaft, change-speed gearing adapted to connect saidcountershaft with said power transmission pinions including a gearadapted to mesh with either of said pinions, a clutch for connecting thesleeve to rotate with the driving shaft, and means to position said Igear so as to mesh with either of said pinions or to occupy a positionin said intermediate portion of the sleeve between said pinions.

3. In a traction engine, a driving shaft, a power transmission sleeve onsaid shaft, two pinions thereon, spaced apart so as to leave anintermediate portion of the sleeve free from gearing, a driving pulleyon said shaft, a clutch for connecting the sleeve to rotate with thedrivingshaft,a countershaft,,a plurality of gears thereon, and slidablemeans intermediate said countershaft and said transmission pinions forconnecting the latter with each of said gears or permitting saidtransmission sleeve to be disconnected therefrom.

4:. In a traction engine, a driving shaft, a power transmission sleeveon said shaft having thereon two pinions, a countershaft, a plurality ofgear wheels connected thereto, an intermediate idler shaft, a pluralityof slidable gears on the idler shaft, one of which is adapted to meshwith either pinion on the transmission sleeve and with one of thecountershaft gear wheels and the other of which is adapted to mesh witha second gear wheel on the countershaft, means for sliding the gearwheels on the idler shaft to and from engaging positions, and means forconnecting the power transmission sleeve to rotate with the drivingshaft.

5. In a traction engine, a driving shaft, a power transmission sleeve onsaid shaft having thereon two pinions, a clutch for connecting thesleeve to rotate with the driving shaft, a countershaft, a plurality ofgear wheels connected thereto, an intermediate idler shaft, a slidablesleeve on the idler shaft, a plurality of gears mounted on the sleeve, areversing pinion suspended from the sleeve, one of the gears on suchslidable sleeve being adapted to mesh with either pinion on thetransmission sleeve and with one of the countershaft gear wheels, andone of the other gears on the slidable sleeve and the reversing pinionbeing adapted to engage a second gear on the countershaft,

and means for sliding the sleeve on the idler shaft to move the gearsthereon to and from engaging positions.

6. In a traction engine, a driving shaft, a power transmission sleeve onsaid shaft having thereon a narrow and a wide pinion, a clutch forconnecting the sleeve to rotate with the driving shaft, a countershaft,a plurality of gears thereon, an intermediate idler shaft, an idlersleeve on said shaft having thereon change speed and reversing gears,one of said gears being adapted to mesh with either of said transmissionpinions and to mesh with said wide pinion in two positions, in one ofwhich a gear on the idler sleeve will mesh with a gear on thecountershaft while in the other position of said gear in mesh with saidwide pinion the reversing gear will mesh with the same gear on thecountershaft, and means for sliding the sleeve on the idler shaft tomove the gears thereon to and from engaging positions.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses this 8th day of April, 1910. v

EDWIN M. WHEELOCK. Witnesses:

H. A. BOWMAN, P. H. GUNCKEL.

Copies of this patent may be obtained for in cents each, by addressingthe Commissioner of Patents,

Washington, D. G."

